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Zootaxa 1519: 1–16 (2007) ISSN 1175-5326 (Print Edition) ZOOTAXA Copyright © 2007 · Magnolia Press ISSN 1175-5334 (Online Edition)

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Zootaxa 1519: 1–16 (2007) ISSN 1175-5326 (Print Edition) ZOOTAXA Copyright © 2007 · Magnolia Press ISSN 1175-5334 (Online Edition) Zootaxa 1519: 1–16 (2007) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA Copyright © 2007 · Magnolia Press ISSN 1175-5334 (online edition) An updated checklist of decapod crustaceans (infraorders Astacidea, Thalassinidea, Polychelida, Palinura, and Anomura) from the northern and northeastern Brazilian coast PETRÔNIO ALVES COELHO1,3,; ALEXANDRE OLIVEIRA DE ALMEIDA1,2; LUIS ERNESTO ARRUDA BEZERRA1 & JESSER FIDELIS DE SOUZA-FILHO1 1Universidade Federal de Pernambuco, Programa de Pós-Graduação em Oceanografia, Departamento de Oceanografia. Av. Arquitetura, s/n, Cidade Universitária. 50670-901 Recife, PE, Brasil. 2Universidade Estadual de Santa Cruz, Departamento de Ciências Biológicas. Rodovia Ilhéus-Itabuna, km 16. 45662-000 Ilhéus, BA, Brasil. 3Bolsista do CNPq, E-mail: petronio.coelho@ pesquisador.cnpq.br Corresponding author Abstract A checklist of the decapod crustacean species from the infraorders Astacidea, Thalassinidea, Polychelida, Palinura, and Anomura from the northern and northeastern (N/NE) Brazilian coast based on literature and material deposited in the carcinological collection of the Universidade Federal de Pernambuco, Recife, Brazil, is provided. The list includes marine and estuarine species reported at least once to each of the studied area, including the oceanic islands and banks along the N/NE Brazil. A total of 146 species is reported, corresponding to an increase of 32.7% when compared to the data published in Paulo Young’s Catalogue (1998). The most representative infraorder concerning number of species is Anomura, represented in N/NE Brazil by 90 species and 10 families, followed by Thalassinidea, with 36 species and 6 families, Palinura, with 14 species and 4 families and, finally, Astacidea, which comprises 6 species and 2 families. Fam- ilies with highest species richness were Porcellanidae (20), Diogenidae (19), Paguridae (18) and Galatheidae (15), all of them included in the infraorder Anomura. Zoogeographic affinities regarding the species are briefly discussed. Key words: species richness; geographic distribution; crustaceans; northern and northeastern Brazil Introduction Reliable lists of species occurring in distinct geographic regions of the world are of multiple uses. In addition to providing comparative figures for biodiversity studies, they serve as an important tool in defining the exten- sion of protected areas, inferring potential impact of anthropogenic activity and complexity of communities, and estimating availability of life resources (Hendrickx 1995). The studies regarding the marine and estuarine decapod crustaceans from the northern and northeastern (N/NE) Brazilian coast started during the 19th century with the contributions of White (1847) and Smith (1869), among others. In the late 19th century, the Brazilian coast was visited by oceanographic expeditions of high historical importance such as the Challenger (Miers 1886; Bate 1888; Henderson 1888) and Branner- Agassiz (Rathbun 1900). In the 20th century, the R/V Calypso carried out samplings between 1961 and 1962 (Haig 1966; Forest & de Saint-Laurent 1967; Rodrigues da Costa 1968; Christoffersen 1979). Collections by the ships Canopus and Akaroa, between 1967 and 1969, and the Almirante Saldanha, between 1967 and 1987 were the basis for studies of Coelho & Koening (1972), Coelho & Ramos (1972), Coelho et al. (1980). Addi- tional information about the Brazilian oceanographic expeditions can be found in Coelho et al. (2004). Accepted by S. Ahyong: 18 May 2007; published: 2 Jul. 2007 1 More recently, in the 1990’s, a large number of crustaceans were collected during the activities of the Project “Recursos Vivos da Zona Econômica Exclusiva Brasileira” (REVIZEE) (Ramos-Porto et al. 2000a, 2000b; Cabral et al. 2000; Silva et al. 2002a, 2002b; Cardoso & Serejo 2003; Ramos-Porto et al. 2003; Komai 2004; Cardoso & Young 2005; Coelho Filho 2006). With the publication of data from the REVIZEE project and the registration, in the last years, of a number of new species, families, and superfamilies, we consider this an opportune moment for the organization of an updated list of species, incorporating most recent data and attempting a comparison between these data and those in the Young’s Catalogue (1998). The goal of this study is to provide an updated list of the marine and estuarine species concerning the decapod infraorders Astacidea, Thalassinidea, Polychelida, Palinura, and Anomura from N/NE Brazilian coast. Zoogeographic affinities regarding the species are briefly discussed. Material and methods Study area Study area ranges from Cape Orange, northern Amapá State (04°17’N, 51°32’W) to Abrolhos Archipel- ago, southern Bahia State (18°19’S, 39°40’W), and towards the east to the St. Paul’s Rocks (0°55'N, 29°20'W), which, along the Rocas Atoll (3°45’S and 3°56’S, 33°37’W and 33°56’W), seamounts of the North chains (01°00’S and 04°00’S, 37°00’W and 39°00’W), and Fernando de Noronha (03°00’S and 4°30’S, 32°00’W and 37°00’W), were considered within a single category denominated oceanic islands and banks. This area is included in the N/NE Brazilian Political Regions (Fig. 1). The region undergoes direct influence of two main currents. The South Equatorial Current splits into two branches near 10° S, and continues towards the northwest into the North Brazilian Current. Another branch turns southwards as the beginning of the Brazil Current (Stramma et al. 1990). The northeast part of the conti- nent has a semi-arid climate resulting in reduced supply of terrigenous material to the shelf. This leads to sta- ble conditions of salinity, temperature, and water transparency, favorable to the growth of vegetal life, as calcareous algae, and hermatypical corals, to depths of almost 100 m (Mabesoone et al. 1972). The northern South America has been divided by several authors in zoogeographic provinces (e.g., Dana 1853; Balech 1951; Coelho 1969; Coelho & Ramos 1972; Briggs 1974; Coelho et al. 1978, 1980; Boschi 2000). In the present report, we have adopted the classification proposal by Coelho & Ramos (1972), which divided the region in two provinces: Guyanas and Brazilian. The former extends from the Orinoco River delta, Venezuela, to Maranhão State, Brazil, and is mainly characterized by muddy and sandy bottoms and by the influence of equatorial rivers (e.g., Orinoco, Amazon, and Tocantins). The latter extends from Maranhão to Rio de Janeiro State, Brazil, being characterized, in a major part, by calcareous algae bottom and the river discharge does not present an important influence for coastal habitats (Coelho 1969; Coelho & Ramos 1972). Method procedure Records in the present contribution were derived from the review of literature dealing with the decapod crustaceans from the north and northeast Brazil (e.g., Smith 1869; Bate 1888; Henderson 1888; Pocock 1890; Rathbun 1900; Forest & de Saint Laurent 1967; Coelho & Ramos 1972; Young 1998; Melo 1999) and from specimens deposited in the crustacean collection at the Departamento de Oceanografia da Universidade Fed- eral de Pernambuco (DOCEAN). A data bank stores the entire acquired information including all the con- sulted references from the last decades to the present moment. The list of species is presented in a table. References to the first record and locality, and distribution by state from northern and northeastern Brazilian regions are also provided. Classification of the species in families and higher taxa are based on Martin & Davis’ (2001) proposal. However, this classification differs in some aspects from the one in Catalogue of Crustacea of Brazil (Young 2 · Zootaxa 1519 © 2007 Magnolia Press COELHO ET AL. 1998). To make it viable to compare the numerical data from 1998 and the current, we adapted the classifica- tion of the Catalogue to the proposal in Martin & Davis (2001). The following abbreviations are used: States of North Region: Amapá (AP) and Pará (PA); States of Northeast Region: Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN), Paraíba (PB), Per- nambuco (PE), Alagoas (AL), Sergipe (SE), Bahia (BA), oceanic islands and banks (IB). FIGURE 1. The study area. Abbreviations: Amapá (AP), Pará (PA), Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN), Paraíba (PB), Pernambuco (PE), Alagoas (AL), Sergipe (SE), and Bahia (BA). Results A list of reported species in the study area, including the species distribution by state, is shown in Tables 1–4. The largest infraorder concerning number of species is Anomura, represented in N/NE Brazil by 90 spe- cies and 10 families, followed by Thalassinidea, with 36 species and 6 families, Palinura, with 14 species and 4 families, Astacidea, which comprises 6 species and 2 families, and, finally, Polychelida, with 2 species and 1 family. Families with highest species richness were Porcellanidae (20), Diogenidae (19), Paguridae (18) and Galatheidae (15), all of them included in the infraorder Anomura. LOBSTER-LIKE AND ANOMURANS FROM BRAZIL Zootaxa 1519 © 2007 Magnolia Press · 3 Occurrence of the infraorder Astacidea in the N/NE Brazil was not mentioned prior to 1998 (Tavares 1998). Recently, Tavares & Young (2002) and Silva et al. (2003) have reported five species of the family Nephropidae. The family Enoplometopidae, although known to northeast Brazil since the contributions made by Fausto Filho (1970) and Coelho & Ramos (1972), was not cited by Tavares (1998) among the marine Bra- zilian astacideans. TABLE 1. Species of the infraorder Astacidea Latreille, 1802 from north and northeast Brazilian coast.
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